1 /* 2 * Copyright (C) 2007 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 #ifndef DatabaseAuthorizer_h 29 #define DatabaseAuthorizer_h 30 31 #include "platform/heap/Handle.h" 32 #include "wtf/Forward.h" 33 #include "wtf/HashSet.h" 34 #include "wtf/ThreadSafeRefCounted.h" 35 #include "wtf/text/StringHash.h" 36 #include "wtf/text/WTFString.h" 37 38 namespace blink { 39 40 extern const int SQLAuthAllow; 41 extern const int SQLAuthDeny; 42 43 class DatabaseAuthorizer : public ThreadSafeRefCountedWillBeGarbageCollectedFinalized<DatabaseAuthorizer> { 44 public: 45 46 enum Permissions { 47 ReadWriteMask = 0, 48 ReadOnlyMask = 1 << 1, 49 NoAccessMask = 1 << 2 50 }; 51 52 static PassRefPtrWillBeRawPtr<DatabaseAuthorizer> create(const String& databaseInfoTableName); trace(Visitor *)53 void trace(Visitor*) { } 54 55 int createTable(const String& tableName); 56 int createTempTable(const String& tableName); 57 int dropTable(const String& tableName); 58 int dropTempTable(const String& tableName); 59 int allowAlterTable(const String& databaseName, const String& tableName); 60 61 int createIndex(const String& indexName, const String& tableName); 62 int createTempIndex(const String& indexName, const String& tableName); 63 int dropIndex(const String& indexName, const String& tableName); 64 int dropTempIndex(const String& indexName, const String& tableName); 65 66 int createTrigger(const String& triggerName, const String& tableName); 67 int createTempTrigger(const String& triggerName, const String& tableName); 68 int dropTrigger(const String& triggerName, const String& tableName); 69 int dropTempTrigger(const String& triggerName, const String& tableName); 70 71 int createView(const String& viewName); 72 int createTempView(const String& viewName); 73 int dropView(const String& viewName); 74 int dropTempView(const String& viewName); 75 76 int createVTable(const String& tableName, const String& moduleName); 77 int dropVTable(const String& tableName, const String& moduleName); 78 79 int allowDelete(const String& tableName); 80 int allowInsert(const String& tableName); 81 int allowUpdate(const String& tableName, const String& columnName); 82 int allowTransaction(); 83 allowSelect()84 int allowSelect() { return SQLAuthAllow; } 85 int allowRead(const String& tableName, const String& columnName); 86 87 int allowReindex(const String& indexName); 88 int allowAnalyze(const String& tableName); 89 int allowFunction(const String& functionName); 90 int allowPragma(const String& pragmaName, const String& firstArgument); 91 92 int allowAttach(const String& filename); 93 int allowDetach(const String& databaseName); 94 95 void disable(); 96 void enable(); 97 void setPermissions(int permissions); 98 99 void reset(); 100 void resetDeletes(); 101 lastActionWasInsert()102 bool lastActionWasInsert() const { return m_lastActionWasInsert; } lastActionChangedDatabase()103 bool lastActionChangedDatabase() const { return m_lastActionChangedDatabase; } hadDeletes()104 bool hadDeletes() const { return m_hadDeletes; } 105 106 private: 107 explicit DatabaseAuthorizer(const String& databaseInfoTableName); 108 void addWhitelistedFunctions(); 109 int denyBasedOnTableName(const String&) const; 110 int updateDeletesBasedOnTableName(const String&); 111 bool allowWrite(); 112 113 int m_permissions; 114 bool m_securityEnabled : 1; 115 bool m_lastActionWasInsert : 1; 116 bool m_lastActionChangedDatabase : 1; 117 bool m_hadDeletes : 1; 118 119 const String m_databaseInfoTableName; 120 121 HashSet<String, CaseFoldingHash> m_whitelistedFunctions; 122 }; 123 124 } // namespace blink 125 126 #endif // DatabaseAuthorizer_h 127